Tool for making angular bends in metal.



A. H. OLSON.

TOOL FOR MAKING ANGULAR BENDS IN METAL.

APPLIUATION IILED MAR.11, 1912.

1,040,745. Patented 0ct.8,1912.

2 SHEETS-SHEET 1.

WITNESSES 11v VENTOR g I 5y i Allow! A. H. OLSON.

TOOL FOR MAKING ANGULAR BENDS IN METAL.

APPLIOATION FILED MAR.11,1912.

- Patented Oct. 8, 1912.

2 SHEETS-SHEET 2.

WfT/VLSSES I INVENTOR WK #4 or;

UNITED STATES P aTENT OFFICE.

ALEX H. OLSON, OF CHICAGO, ILLINOIS.

TOOL FOR MAKING ANGIILAR BENDS IN METAL.

Patented Oct. 8, 1912.

Application filed March 11, 1912. Serial No. 683,166.

To all whom 'it may concern:

Be it known that I, Annx I-I. OLSON, a subject of the King of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improven'ients in Tools for Making Angular Bends in Metal, of which the following is a specification.

This invention relates to improvements in tools for making angular bends in metal, and its object is to provide a simple, el'licient and easily operated tool of this kind, and also one which requires no adj ustment, but is always ready to take metal of any size up to its full capacity.

\Vith these objects in view, the invention consists in a novel combination and arrangement of parts to be hereinafter described and claimed.

In order that the invention may be better understood, reference is had to the accompanying drawings in which- Figure 1 is a plan view of the tool opened up ready for use. Fig. 2 is a plan view showing the position of the tool at the end of the bending operation; Fig. 3 is an ele vation looking in the direction of the arrow 3 in Fig. 2; Fig. 4 is an elevation looking in the direction of the arrow 4 in Fig. 2; Fig. 5 is a sectional detail on the line 5-5 of Fig. 2, and Fig. 6 is a perspective view of the base and bending members separated.

The tool comprises, broadly speaking, a base having a sliding jaw for clamping the work thereto, and a pivoted bender also provided with a sliding jaw for holding the end of the work to be bent.

In the drawings, 10 denotes the base of the tool, the same being provided with perforations 11 so that it may be secured by screws or other suitable fastening means to a work-bench or other support. The top of the base has an upstanding T-shaped guide 12 on which a jaw 13 is slidably mounted, and from the front end of the base rises an abutment or jaw 1% toward and from which the jaw 13 is slidable, said abutment forming a stationary jaw and cooperating with the jaw 13 to hold the piece of metal to be bent. In the side of the base 10 is a recess 15 in which is pivotally mounted, by means of a stud 16, a hand-lever 17 having adjacent to its pivot a slot 18 into which extends a stud 19 carried by the jaw 13, whereby the hand-lever is connected to said jaw, and as the connection is close to the pivot, a powerful leverage is obtained.

The bending member is indicated at 20, land on the top of said member is a T-shaped guide 21 on which is slidably mounted a jaw 22. This member also has an upstanding abutment 23 forming a jaw which cooperates iwith the jaw 22 to grip the end of the piece of metal which is to be bent at an angle to that end which is held by the jaws 13 and 14.

The base 10 and the bending member 20 are pivotally connected as follows: At the top of the abutment 93 is an overhanging portion 2 1: which fits on top of a similar part 25 at the top of the abutment 14. These superposed parts have alined aperturcs to receive a pivot stud 26. In the side jear 27 on the bending member. A pivot stud 28 passes partly through the base from the 'bottom thereof and through the car 27. The pivot studs 26 and 28, of course, are in axial jalincment. In order to provide a tight :working pivot-joint a spring washer 29 and a solid washer 30 are interposed between the bottom of the base and the head of the pivot stud 28. The purpose of this arrangement will be presently made clear.

The bending member 20 and the slidable jaw 22 are operated by a hand-lever 31 which lis pivoted on a stud 32 in a recess 33 in the side of said member, and said lever has a slot 3 1-. into which extends a stud 35 carried by the jaw. The connection between the hand-lever and the sliding jaw is also close to the pivot of the former, so that a powerful leverage may be had. To the forward end of the base 10 is secured a bracket arm 30 carrying a gage block 37, the latter being slidably mounted on the arm and held in adjusted position by a hand-screw 38.

On the top of the base 10 is a lug 39 to which is secured an arcuate arm 40 carrying an adjustable stop block 41, said block being held in adjusted position by a screw 42. The bending member 20 has a bottom groove 41-3 in which the arm 40 fits.

In operation, the tool being opened, the piece to be bent is placed against the jaws 14C and 22, one of the jaws being on one side of the pivot of the bending member 20 and the other jaw being on the other side thereof. The piece will be so positioned that the point at which the bond is to be made of the base is a recess into which extends an for the easy manipulation of the tool. To

:- ing a fixed jaw, a jaw mounted on the base will be at the corner of the jaw 14 which is opposite the jaw 22. The hand-lever 17, is now drawn which slides the jaw 13 toward the work and clamps the same against the jaw 14. Still holding the hand-lever 17 so as to firmly grip the work, the hand-lever 31 is drawn, which will cause the jaw 22 to approach the jaw 23 and grip that end of the piece which is to be bent at an angle to the part held by the jaws 13 and 1 1. In view of the tight pivotal connection between the base 10 and the member 20, the jaw 22 will first close in on the work, and as the hand-lever 31 is drawn more and more, the jaw 20 finally swings on its pivot and makes the bend in the piece at the desired angle. As the bending strain is taken up by the two hand-levers, the mounting of the tool on a bench or other support is merely release the work, the hand-levers are swung back, whereupon the sliding jaws recede and the parts assume the position shown in Fig. 1, which leaves the work free to be removed. Light iron, such as band iron can be bent cold, but heavier iron requires heating as will be understood.

The gage block 37 and the stop block 41 are useful where a number of pieces are to be bent alike, the gage block determining the position of the bend, and the stop block the angle.

The tool requires no adjustment but automatically adapts itself to the work.

I claim:

l. A bending tool comprising a base, a bending member pivoted to the base, fixed jaws and sliding jaws on the base and the bending member, means for operating the sliding jaw of the base, means for operating the bending member, and a connection between the last-mentioned operating means and the sliding jaw of the bending member.

2. A bending tool comprising a base havand movable toward and from the fixed jaw, means for operating said aw, a bending member pivoted to the base and having a fixed jaw, the face of said jaw being normally in alinement with the face of the fixed jaw of the base, and said jaws being on opposite sides of the pivot of the bending member, means for operating the bending member, a jaw on the bending member and movable toward and from the fixed jaw thereof, and an operative connection between the last-mentioned operating means and the movable jaw of the bending member.

'3. A bending tool comprising a base, a bending member pivoted to the base, fixed jaws and movable jaws on the base and the bending member, means for operating the five cents movable jaw of the base, means for operating the bending member, a connection between the last-mentioned operating means and the movable jaw of the bending member, and a stop in the path of the last-mentioned operating means.

4. A bending tool comprising a base, a bending member pivoted to the base, fixed jaws and movable jaws on the base and the bending member, means for operating the movable jaw of the base, means for operating the bending member, a connection be tween the last-mentioned operating means and the movable jaw of the bending memher, and a gage carried by the base and adjustable toward and from the fixed jaw thereof.

5. A bending tool comprising a base, a bending member pivoted to the base, fixed jaws and sliding jaws on the base and the bending member, means for operating the sliding jaw of the base, and means for initially operating the sliding jaw of the bending member and thereafter operating said member.

6. A. bending tool comprising a base, a

bending member pivoted to the base, fric- 'tion means for restraining the swing of the bending member on its pivot, fixed jaws ,and movable jaws on the base and the bending member, means for operating the movtable jaw of the base, means for operating the bending member, and a connection be tween the last-mentioned operating means and the movable jaw of the bending member.

7. A bending tool comprising a base having an abutment and a guide, a jaw slidably mounted on the guide toward and from the abutment, a bending member pivoted to the base and having an abutment and a guide, a jaw slidably mounted on the last- .mentio-ned abutment, means for. operating ,the sliding jaw of the base, means for operating the bending member, and a connection between the last-mentioned operating means and the sliding jaw of the bending member.

8. A bending tool comprising a base, a bending member pivoted to the base, fixed jaws and sliding jaws on the base and the bending member, an operating lever pivoted to the base and connected to the sliding jaw thereof, and a lever connected to the bending member and to the sliding jaw thereof for operating said member and jaw.

In testimony whereof I afiix my signature in presence of two witnesses.

H. G. BATCHELOR, S. J. LEHRER.

each, by addressing the Commissioner of Patents, n, D. C. 

